Economic Development - Logarithms problem

Hi, I'm having a lot of difficulty with this problem because I'm terrible with logs.

Consider two countries, Chairland and Couchia. In year 0, Chairland starts out with a per-capita
income of $100, and this grows at a rate of 2% per year. Couchia starts out with a per-capita income
of $1000, and this grows at a rate of 1% per year.
In how many years will Chairland’s per-capita income catch up with Couchia’s per-capita income?
(decimals are OK).